Question 1

Which of the following statements correctly deletes a dynamically-allocated array pointed to by p?

Accepted Answer

A)  delete p; 
B)  p delete[ ]; 
C)  delete [ ] p; 
D)  delete array p; 
E)  None of the above 
A)  delete p; 
B)  p delete[ ]; 
C)  delete [ ] p; 
D)  delete array p; 
E)  None of the above

Question 2

The statement cin >> *p;

Accepted Answer

A)  stores the keyboard input into the variable p. 
B)  stores the keyboard input into the pointer called p. 
C)  is illegal in C++. 
D)  stores the keyboard input into the variable pointed to by p. 
E)  None of the above 
A)  stores the keyboard input into the variable p. 
B)  stores the keyboard input into the pointer called p. 
C)  is illegal in C++. 
D)  stores the keyboard input into the variable pointed to by p. 
E)  None of the above

Question 3

The statement shared_ptr<int> p(new int); involves

Accepted Answer

A)  a single allocation of a dynamic block of memory. 
B)  two allocations of two different dynamic blocks of memory. 
C)  three allocations of three different dynamic blocks of memory. 
D)  no allocations of dynamic memory. 
E)  None of the above 
A)  a single allocation of a dynamic block of memory. 
B)  two allocations of two different dynamic blocks of memory. 
C)  three allocations of three different dynamic blocks of memory. 
D)  no allocations of dynamic memory. 
E)  None of the above

Question 4

The expression s->m is meaningful only when s is a pointer to a structure and m is a member of the structure.

Accepted Answer

A) True 
 B)False

Question 5

A temporary value in a program can be referred to by at most one lvalue reference.

Accepted Answer

A) True 
 B)False

Question 6

The set of operations supported by the unique_ptr class include

Accepted Answer

A)  the dereferencing operators * and ->, the post and pre increment operators ++, and the post and pre decrement operators --. 
B)  the dereferencing operators * and ->. 
C)  the assignment operator. 
D)  the delete operator. 
E)  None of the above 
A)  the dereferencing operators * and ->, the post and pre increment operators ++, and the post and pre decrement operators --. 
B)  the dereferencing operators * and ->. 
C)  the assignment operator. 
D)  the delete operator. 
E)  None of the above

Question 7

The term pointer can be used interchangeably with

Accepted Answer

A)  address. 
B)  variable. 
C)  decimal pointer. 
D)  counter pointer. 
E)  None of the above 
A)  address. 
B)  variable. 
C)  decimal pointer. 
D)  counter pointer. 
E)  None of the above

Question 8

When you work with a dereferenced pointer, you are actually working with

Accepted Answer

A)  a variable whose memory has been deallocated. 
B)  a copy of the value pointed to by the pointer variable. 
C)  the variable whose address is stored in the pointer variable. 
D)  All of the above 
E)  None of the above 
A)  a variable whose memory has been deallocated. 
B)  a copy of the value pointed to by the pointer variable. 
C)  the variable whose address is stored in the pointer variable. 
D)  All of the above 
E)  None of the above

Question 9

Assuming that arr is an array identifier, the statement sum += *arr;

Accepted Answer

A)  is illegal in C++. 
B)  will always result in a compiler error. 
C)  adds the value stored in arr[0] to sum. 
D)  adds the address of the pointer arr to sum. 
E)  None of the above 
A)  is illegal in C++. 
B)  will always result in a compiler error. 
C)  adds the value stored in arr[0] to sum. 
D)  adds the address of the pointer arr to sum. 
E)  None of the above

Question 10

When the less than ( < ) operator is used between two pointer variables, the expression is testing whether

Accepted Answer

A)  the value pointed to by the first is less than the value pointed to by the second. 
B)  the value pointed to by the first is greater than the value pointed to by the second. 
C)  the address of the first variable comes before the address of the second variable in the computer's memory. 
D)  the first variable was declared before the second variable. 
E)  None of the above 
A)  the value pointed to by the first is less than the value pointed to by the second. 
B)  the value pointed to by the first is greater than the value pointed to by the second. 
C)  the address of the first variable comes before the address of the second variable in the computer's memory. 
D)  the first variable was declared before the second variable. 
E)  None of the above

Question 11

The ________ and ________ operators can respectively be used to increment and decrement a pointer variable.

Accepted Answer

A)  dereferencing, indirection 
B)  modulus, division 
C)  ++, -- 
D)  All of the above 
E)  None of the above 
A)  dereferencing, indirection 
B)  modulus, division 
C)  ++, -- 
D)  All of the above 
E)  None of the above

Question 12

The statement Rectangle * boxPtr; defines a variable boxPtr to be a pointer pointing to a type Rectangle.

Accepted Answer

A) True 
 B)False

Question 13

When the ________ is placed in front of a variable name, it returns the address of that variable.

Accepted Answer

A)  asterisk ( * ) 
B)  conditional operator 
C)  ampersand ( & ) 
D)  semicolon ( ; ) 
E)  None of the above 
A)  asterisk ( * ) 
B)  conditional operator 
C)  ampersand ( & ) 
D)  semicolon ( ; ) 
E)  None of the above

Question 14

Which of the following statements is not valid C++ code?

Accepted Answer

A)  int ptr = &num1; 
B)  int ptr = int *num1; 
C)  float num1 = &ptr2; 
D)  All of the above are valid. 
E)  All of the above are invalid. 
A)  int ptr = &num1; 
B)  int ptr = int *num1; 
C)  float num1 = &ptr2; 
D)  All of the above are valid. 
E)  All of the above are invalid.

Question 15

The ________, also known as the address operator, returns the memory address of a variable.

Accepted Answer

A)  asterisk ( * ) 
B)  ampersand ( & ) 
C)  percent sign (%) 
D)  exclamation point ( ! ) 
E)  None of the above 
A)  asterisk ( * ) 
B)  ampersand ( & ) 
C)  percent sign (%) 
D)  exclamation point ( ! ) 
E)  None of the above

Question 16

The statement cout << &num1; will output

Accepted Answer

A)  the value stored in the variable called num1. 
B)  the memory address of the variable called num1. 
C)  the number 1. 
D)  the string "&num1". 
E)  None of the above 
A)  the value stored in the variable called num1. 
B)  the memory address of the variable called num1. 
C)  the number 1. 
D)  the string "&num1". 
E)  None of the above

Question 17

If a variable occupies more than one byte of memory, its address is

Accepted Answer

A)  the address of the last byte of storage allocated to it. 
B)  the average of the addresses used to store the variable. 
C)  the address of the first byte of storage allocated to it. 
D)  general delivery. 
E)  None of the above 
A)  the address of the last byte of storage allocated to it. 
B)  the average of the addresses used to store the variable. 
C)  the address of the first byte of storage allocated to it. 
D)  general delivery. 
E)  None of the above

Question 18

Dynamic memory allocation occurs

Accepted Answer

A)  when a variable is created by the compiler. 
B)  when a variable is created at run-time. 
C)  when a pointer fails to dereference the right variable. 
D)  when a pointer is assigned an incorrect address. 
E)  None of the above 
A)  when a variable is created by the compiler. 
B)  when a variable is created at run-time. 
C)  when a pointer fails to dereference the right variable. 
D)  when a pointer is assigned an incorrect address. 
E)  None of the above

Question 19

It is possible for a structure to contain as a member a pointer to its own structure type.

Accepted Answer

A) True 
 B)False

Question 20

The delete operator should only be used on pointers that

Accepted Answer

A)  have not yet been used. 
B)  have been correctly initialized. 
C)  point to storage allocated by the new operator. 
D)  are appropriately dereferenced. 
E)  None of the above 
A)  have not yet been used. 
B)  have been correctly initialized. 
C)  point to storage allocated by the new operator. 
D)  are appropriately dereferenced. 
E)  None of the above

Which of the following statements correctly deletes a dynamically-allocated array pointed to by p?

The statement cin >> *p;

The statement shared_ptr<int> p(new int); involves

The expression s->m is meaningful only when s is a pointer to a structure and m is a member of the structure.

A temporary value in a program can be referred to by at most one lvalue reference.

The set of operations supported by the unique_ptr class include

The term pointer can be used interchangeably with

When you work with a dereferenced pointer, you are actually working with

Assuming that arr is an array identifier, the statement sum += *arr;

When the less than ( < ) operator is used between two pointer variables, the expression is testing whether

The and operators can respectively be used to increment and decrement a pointer variable.

The statement Rectangle * boxPtr; defines a variable boxPtr to be a pointer pointing to a type Rectangle.

When the ________ is placed in front of a variable name, it returns the address of that variable.

Which of the following statements is not valid C++ code?

The ________, also known as the address operator, returns the memory address of a variable.

The statement cout << &num1; will output

If a variable occupies more than one byte of memory, its address is

Dynamic memory allocation occurs

It is possible for a structure to contain as a member a pointer to its own structure type.

The delete operator should only be used on pointers that

Introduction to Computers and Programming

Introduction to C Plus Plus

Expressions and Interactivity

Making Decisions

Looping

Functions

Introduction to Classes and Objects

Arrays

Searching, Sorting, Algorithm Analysis

More About Classes and Object-Oriented Programming

More on C-Strings and the String Class

Advanced File and Io Operations

Recursion

Polymorphism and Virtual Functions

Exceptions, Templates, and the Standard Template Library Stl

Linked Lists

Stacks and Queues

Binary Trees

Filters

Exam 10: Pointers

Which of the following statements correctly deletes a dynamically-allocated array pointed to by p?

The statement cin >> *p;

The statement shared_ptr<int> p(new int); involves

The expression s->m is meaningful only when s is a pointer to a structure and m is a member of the structure.

A temporary value in a program can be referred to by at most one lvalue reference.

The set of operations supported by the unique_ptr class include

The term pointer can be used interchangeably with

When you work with a dereferenced pointer, you are actually working with

Assuming that arr is an array identifier, the statement sum += *arr;

When the less than ( < ) operator is used between two pointer variables, the expression is testing whether

The ________ and ________ operators can respectively be used to increment and decrement a pointer variable.

The statement Rectangle * boxPtr; defines a variable boxPtr to be a pointer pointing to a type Rectangle.

When the ________ is placed in front of a variable name, it returns the address of that variable.

Which of the following statements is not valid C++ code?

The ________, also known as the address operator, returns the memory address of a variable.

The statement cout << &num1; will output

If a variable occupies more than one byte of memory, its address is

Dynamic memory allocation occurs

It is possible for a structure to contain as a member a pointer to its own structure type.

The delete operator should only be used on pointers that

Introduction to Computers and Programming

Introduction to C Plus Plus

Expressions and Interactivity

Making Decisions

Looping

Functions

Introduction to Classes and Objects

Arrays

Searching, Sorting, Algorithm Analysis

More About Classes and Object-Oriented Programming

More on C-Strings and the String Class

Advanced File and Io Operations

Recursion

Polymorphism and Virtual Functions

Exceptions, Templates, and the Standard Template Library Stl

Linked Lists

Stacks and Queues

Binary Trees

Filters

The and operators can respectively be used to increment and decrement a pointer variable.